Technical Grade Magnesium Oxide for Fertilizers
Technical grade magnesium oxide for fertilizers is technical magnesia powder used as a magnesium supplement in agricultural fertilizers. It qualifies under tariff item 2519.90.00 as 'other' magnesium oxide from natural sources, not chemically modified beyond calcination.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is mixed with nitrogen, phosphorus, or potassium fertilizers
Mineral or chemical fertilizers are classified in Chapter 31.
If the product is uncalcined magnesite used directly as a soil amendment
Crude natural minerals not processed beyond Chapter 25 Note 1 may fall under other headings.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• If the product is blended with other fertilizer components, it may be classified as a fertilizer under Chapter 31
• Keep the product unblended to maintain classification under 2519.90.00
Related Products under Tariff item 2519.90.00
Animal Feed Grade Magnesium Oxide
Coarse magnesium oxide powder formulated for livestock mineral supplements to prevent grass tetany. This product falls under tariff item 2519.90.00 as 'Other' magnesium oxide, suitable for feed but imported in bulk.
Caustic Calcined Magnesia Powder
Caustic calcined magnesia is magnesium oxide produced by low-temperature calcination of magnesite, yielding a reactive powder used in chemical and fertilizer industries. It falls under tariff item 2519.90.00 as 'other' magnesium oxide, since it is not fused or dead-burned and undergoes only calcination, a process permitted by Chapter 25 Note 1.
Caustic Calcined Magnesite 85/15 (MgO/SiO2)
Caustic calcined magnesite blend with 85% MgO and 15% SiO2, used for basic refractory brick production. This product falls under tariff item 2519.90.00 as 'Other' magnesium oxide, specifically caustic calcined magnesite, which is not further processed beyond calcination.
Caustic Calcined Magnesite Powder
Fine powder produced by calcining natural magnesite at moderate temperatures to yield reactive magnesium oxide with some residual CO2. This product is classified under tariff item 2519.90.00 as caustic calcined magnesite, a form of magnesium oxide.
CCM Fines Recovery Dust
Fine dust recovered from caustic calcined magnesite production, classified the same as the primary product. This product falls under tariff item 2519.90.00 as caustic calcined magnesite, regardless of particle size.
Dead-burned Magnesia 0-100mm for Rotary Kilns
Coarse-grained dead-burned magnesia sized 0-100mm, produced by sintering magnesite at high temperatures for use in rotary kiln linings. This product falls under tariff item 2519.90.00 as 'Other' magnesium oxide, specifically dead-burned magnesia, which is not further processed beyond sintering.